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# Copyright 2009-2012 10gen, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Test that pymongo is thread safe."""
import unittest
import threading
import traceback
from nose.plugins.skip import SkipTest
from test.utils import server_started_with_auth, joinall, RendezvousThread
from test.test_client import get_client
from pymongo.mongo_client import MongoClient
from pymongo.replica_set_connection import MongoReplicaSetClient
from pymongo.pool import SocketInfo, _closed
from pymongo.errors import AutoReconnect, OperationFailure
def get_pool(client):
if isinstance(client, MongoClient):
return client._MongoClient__pool
elif isinstance(client, MongoReplicaSetClient):
rs_state = client._MongoReplicaSetClient__rs_state
return rs_state[rs_state.writer].pool
else:
raise TypeError(str(client))
class AutoAuthenticateThreads(threading.Thread):
def __init__(self, collection, num):
threading.Thread.__init__(self)
self.coll = collection
self.num = num
self.success = True
self.setDaemon(True)
def run(self):
try:
for i in xrange(self.num):
self.coll.insert({'num':i})
self.coll.find_one({'num':i})
except Exception:
traceback.print_exc()
self.success = False
class SaveAndFind(threading.Thread):
def __init__(self, collection):
threading.Thread.__init__(self)
self.collection = collection
self.setDaemon(True)
def run(self):
sum = 0
for document in self.collection.find():
sum += document["x"]
assert sum == 499500, "sum was %d not 499500" % sum
class Insert(threading.Thread):
def __init__(self, collection, n, expect_exception):
threading.Thread.__init__(self)
self.collection = collection
self.n = n
self.expect_exception = expect_exception
self.setDaemon(True)
def run(self):
for _ in xrange(self.n):
error = True
try:
self.collection.insert({"test": "insert"})
error = False
except:
if not self.expect_exception:
raise
if self.expect_exception:
assert error
class Update(threading.Thread):
def __init__(self, collection, n, expect_exception):
threading.Thread.__init__(self)
self.collection = collection
self.n = n
self.expect_exception = expect_exception
self.setDaemon(True)
def run(self):
for _ in xrange(self.n):
error = True
try:
self.collection.update({"test": "unique"},
{"$set": {"test": "update"}})
error = False
except:
if not self.expect_exception:
raise
if self.expect_exception:
assert error
class IgnoreAutoReconnect(threading.Thread):
def __init__(self, collection, n):
threading.Thread.__init__(self)
self.c = collection
self.n = n
self.setDaemon(True)
def run(self):
for _ in range(self.n):
try:
self.c.find_one()
except AutoReconnect:
pass
class FindPauseFind(RendezvousThread):
"""See test_server_disconnect() for details"""
def __init__(self, collection, state):
"""Params:
`collection`: A collection for testing
`state`: A shared state object from RendezvousThread.shared_state()
"""
super(FindPauseFind, self).__init__(state)
self.collection = collection
def before_rendezvous(self):
# acquire a socket
list(self.collection.find())
self.pool = get_pool(self.collection.database.connection)
socket_info = self.pool._get_request_state()
assert isinstance(socket_info, SocketInfo)
self.request_sock = socket_info.sock
assert not _closed(self.request_sock)
def after_rendezvous(self):
# test_server_disconnect() has closed this socket, but that's ok
# because it's not our request socket anymore
assert _closed(self.request_sock)
# if disconnect() properly closed all threads' request sockets, then
# this won't raise AutoReconnect because it will acquire a new socket
assert self.request_sock == self.pool._get_request_state().sock
list(self.collection.find())
assert self.collection.database.connection.in_request()
assert self.request_sock != self.pool._get_request_state().sock
class BaseTestThreads(object):
"""
Base test class for TestThreads and TestThreadsReplicaSet. (This is not
itself a unittest.TestCase, otherwise it'd be run twice -- once when nose
imports this module, and once when nose imports
test_threads_replica_set_connection.py, which imports this module.)
"""
def setUp(self):
self.db = self._get_client().pymongo_test
def tearDown(self):
# Clear client reference so that RSC's monitor thread
# dies.
self.db = None
def _get_client(self):
"""
Intended for overriding in TestThreadsReplicaSet. This method
returns a MongoClient here, and a MongoReplicaSetClient in
test_threads_replica_set_connection.py.
"""
# Regular test client
return get_client()
def test_threading(self):
self.db.drop_collection("test")
for i in xrange(1000):
self.db.test.save({"x": i})
threads = []
for i in range(10):
t = SaveAndFind(self.db.test)
t.start()
threads.append(t)
joinall(threads)
def test_safe_insert(self):
self.db.drop_collection("test1")
self.db.test1.insert({"test": "insert"})
self.db.drop_collection("test2")
self.db.test2.insert({"test": "insert"})
self.db.test2.create_index("test", unique=True)
self.db.test2.find_one()
okay = Insert(self.db.test1, 2000, False)
error = Insert(self.db.test2, 2000, True)
error.start()
okay.start()
error.join()
okay.join()
def test_safe_update(self):
self.db.drop_collection("test1")
self.db.test1.insert({"test": "update"})
self.db.test1.insert({"test": "unique"})
self.db.drop_collection("test2")
self.db.test2.insert({"test": "update"})
self.db.test2.insert({"test": "unique"})
self.db.test2.create_index("test", unique=True)
self.db.test2.find_one()
okay = Update(self.db.test1, 2000, False)
error = Update(self.db.test2, 2000, True)
error.start()
okay.start()
error.join()
okay.join()
def test_server_disconnect(self):
# PYTHON-345, we need to make sure that threads' request sockets are
# closed by disconnect().
#
# 1. Create a client with auto_start_request=True
# 2. Start N threads and do a find() in each to get a request socket
# 3. Pause all threads
# 4. In the main thread close all sockets, including threads' request
# sockets
# 5. In main thread, do a find(), which raises AutoReconnect and resets
# pool
# 6. Resume all threads, do a find() in them
#
# If we've fixed PYTHON-345, then only one AutoReconnect is raised,
# and all the threads get new request sockets.
cx = get_client(auto_start_request=True)
collection = cx.db.pymongo_test
# acquire a request socket for the main thread
collection.find_one()
pool = get_pool(collection.database.connection)
socket_info = pool._get_request_state()
assert isinstance(socket_info, SocketInfo)
request_sock = socket_info.sock
state = FindPauseFind.create_shared_state(nthreads=40)
threads = [
FindPauseFind(collection, state)
for _ in range(state.nthreads)
]
# Each thread does a find(), thus acquiring a request socket
for t in threads:
t.start()
# Wait for the threads to reach the rendezvous
FindPauseFind.wait_for_rendezvous(state)
try:
# Simulate an event that closes all sockets, e.g. primary stepdown
for t in threads:
t.request_sock.close()
# Finally, ensure the main thread's socket's last_checkout is
# updated:
collection.find_one()
# ... and close it:
request_sock.close()
# Doing an operation on the client raises an AutoReconnect and
# resets the pool behind the scenes
self.assertRaises(AutoReconnect, collection.find_one)
finally:
# Let threads do a second find()
FindPauseFind.resume_after_rendezvous(state)
joinall(threads)
for t in threads:
self.assertTrue(t.passed, "%s threw exception" % t)
class BaseTestThreadsAuth(object):
"""
Base test class for TestThreadsAuth and TestThreadsAuthReplicaSet. (This is
not itself a unittest.TestCase, otherwise it'd be run twice -- once when
nose imports this module, and once when nose imports
test_threads_replica_set_connection.py, which imports this module.)
"""
def _get_client(self):
"""
Intended for overriding in TestThreadsAuthReplicaSet. This method
returns a MongoClient here, and a MongoReplicaSetClient in
test_threads_replica_set_connection.py.
"""
# Regular test client
return get_client()
def setUp(self):
client = self._get_client()
if not server_started_with_auth(client):
raise SkipTest("Authentication is not enabled on server")
self.client = client
self.client.admin.system.users.remove({})
self.client.admin.add_user('admin-user', 'password')
self.client.admin.authenticate("admin-user", "password")
self.client.auth_test.system.users.remove({})
self.client.auth_test.add_user("test-user", "password")
def tearDown(self):
# Remove auth users from databases
self.client.admin.authenticate("admin-user", "password")
self.client.admin.system.users.remove({})
self.client.auth_test.system.users.remove({})
self.client.drop_database('auth_test')
# Clear client reference so that RSC's monitor thread
# dies.
self.client = None
def test_auto_auth_login(self):
client = self._get_client()
self.assertRaises(OperationFailure, client.auth_test.test.find_one)
# Admin auth
client = self._get_client()
client.admin.authenticate("admin-user", "password")
nthreads = 10
threads = []
for _ in xrange(nthreads):
t = AutoAuthenticateThreads(client.auth_test.test, 100)
t.start()
threads.append(t)
joinall(threads)
for t in threads:
self.assertTrue(t.success)
# Database-specific auth
client = self._get_client()
client.auth_test.authenticate("test-user", "password")
threads = []
for _ in xrange(nthreads):
t = AutoAuthenticateThreads(client.auth_test.test, 100)
t.start()
threads.append(t)
joinall(threads)
for t in threads:
self.assertTrue(t.success)
class TestThreads(BaseTestThreads, unittest.TestCase):
pass
class TestThreadsAuth(BaseTestThreadsAuth, unittest.TestCase):
pass
if __name__ == "__main__":
unittest.main()